I am doing more research on Epiphone Upright basses. I have expanded my quest to learn more specific characteristics about these basses. For all of you that own or did own one of these great American made plywood basses here are my research questions if you can help me out. You can post or PM the information. What is the serial number and where was it located? Serial numbers can be located under the scroll head on the E side (look up), at the end of the finger board or at the end pin. What is the model number? It can be located on the metal badge on the tail piece. Model numbers are B1, B2, B3, B4 and B5. Is your tail piece black, dark brown, blonde or highly flamed maple? What color is your bass? What finish are your tuners? Brass, Bright nickel, Blacken nickel Are your tuners etched? This is so far only a B5 characteristic Does the bass have real Black/White/Black purfling, single black pin stripe or double black pin stripe? Does it have a purfling "loop" on the back of the bass below the neck? Any guess as to what year the bass was made…and this is a guess. Any other notable characteristics to the bass? Thanks every one…the more I found out about these basses the less I actually know…but it is fun and I am meeting the nicest people…like a 85 year old man who is the original owner of a Epiphone B-2 he bought new in 1941…it just doesn’t get any better then that!!!